LCM of 989, 635, 909, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 989, 635, 909, 420 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 989, 635, 909, 420. So, keep reading to learn more.
Given numbers are 989,635,909,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 989,635,909,420 is 15984237780.
Find LCM of 989,635,909,420 with Prime Factorization
| 3 | 989, 635, 909, 420 |
| 5 | 989, 635, 303, 140 |
| 989, 127, 303, 28 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 989 x 127 x 303 x 28 = 15984237780
Therefore, the lowest common multiple of 989,635,909,420 is 15984237780.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
989 x 635 x 909 x 420 = 239763566700
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
989 : 1, 23, 43, 989
635 : 1, 5, 127, 635
909 : 1, 3, 9, 101, 303, 909
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 989,635,909,420, is 1.
Now, the common factors can be found like this.
989:23x 43
635:5x 127
909:3x 3x 101
420:2x 2x 3x 5x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5 = 15
Therefore, the value for common factors is 15.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 239763566700/(1x15)
LCM = 239763566700/15
LCM = 15984237780
Thus, we can understand that the LCM of 989,635,909,420 is 15984237780.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 989, 635, 909, 420
1. What is the LCM of 989, 635, 909, 420?
Answer: LCM of 989, 635, 909, 420 is 15984237780.
2. How to calculate the LCM of 989, 635, 909, 420?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 989, 635, 909, 420.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.